Allen-Bradley 193-TDC90 Thermal Overload Relay

Allen-Bradley 193-TDC90 Thermal Overload Relay is a Bulletin 193-T bimetallic overload protection device designed for use with IEC motor starters. It protects three-phase motors by tripping the control circuit when the motor current reaches a rated range of 72–90 A, making it suitable for motors in the 70–90 A class. The unit is ambient temperature compensated to maintain a consistent trip behavior across a typical operating range of -20°C to +60°C. As part of the 193-T series, it pairs with Allen-Bradley 193-T contactors and other compatible components, delivering compact, field-serviceable overload protection in motor control panels. This overload relay is intended for industrial applications such as pumps, fans, conveyors, and other equipment driven by 3-phase motors where reliable overload protection and straightforward replacement within the 193-T family are desirable.